The advertisement criticises both sides of politics for its treatment of Julia Gillard.

ABC News

A women's rights group has accused Prime Minister Kevin Rudd of treachery for his treatment of predecessor Julia Gillard.

The Victorian Women's Trust has placed full-page advertisements in four Australian newspapers praising Ms Gillard's achievements and slamming both Labor and the Liberal parties for their actions over the past three years.

"I think there's been a hostile media, by and large, over the last three years, which I also argue has given licence to a lot of people across the community to speak very destructively and disrespectfully towards Julia Gillard and the minority government," she said.

The trust says the seams of contempt and sexism should be cause for reflection on what is needed to restore respect and "a fair go" for women.

It says it used donations to pay for the advertisements.

Mr Rudd ousted Ms Gillard in a spill of the Labor leadership on June 26.

His restoration to the prime ministership came three years after he was replaced in the top job by Ms Gillard.